Restore Full Functionality to Your GM Vehicle
Are you dealing with baffling electrical issues in your 2010 Cadillac Escalade EXT? One minute the power windows work, the next they don’t? Are you seeing strange warning lights or experiencing intermittent no-start conditions? The Body Control Module, or BCM, is the central nervous system for your vehicle’s comfort and security features, and when it fails, it can cause a cascade of frustrating problems. This isn’t just an inconvenience; it can affect vehicle security and safety systems. As a technician, I’ve seen how a faulty BCM can make a high-end truck like an Escalade feel unreliable. This replacement Body Control Module, part number 20864767, is the definitive solution to restore your vehicle to its proper working order.
A Technician’s Notebook: The Escalade with a Mind of Its Own
I remember a 2010 Escalade EXT rolling into my bay that had its owner completely stumped. The alarm would go off randomly, the interior lights would flicker while driving, and sometimes the key fob wouldn’t work at all. The owner had already replaced the battery and checked all the fuses. A scan revealed a slew of U-codes (communication errors) between various modules. This is a classic sign that the central hub—the BCM—is failing. The internal logic board gets compromised, often from voltage spikes or moisture, and it can no longer properly direct traffic on the vehicle’s data network. By replacing the BCM with a correctly programmed unit, we restored all functions and eliminated the communication faults in a single repair. This part solves that exact problem.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, a faulty BCM is the likely culprit:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (staying on or not turning on).
- ✔ “Service Theft Deterrent System” or other security-related warnings on the dash.
- ✔ Key fobs that stop working or work unreliably.
- ✔ Communication error codes, such as U0140, U0155, or U0100.
- ✔ A vehicle that won’t start, even with a good battery and starter.
- ✔ Malfunctioning climate control or radio displays.
The Smart Solution: VIN-Specific Cloning Service
Don’t waste time and money at a dealership. This isn’t just a part; it’s a complete solution. We perform a cloning service by transferring the precise data from your original BCM to this replacement unit using your Vehicle Identification Number (VIN). This ensures that all your vehicle’s specific options and security information are intact. The module arrives at your door ready for installation, with the latest GM software updates already applied, saving you a costly trip for programming.
A Straightforward Guide to BCM Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- ✔ Locate the BCM: On the 2010 Escalade EXT, the BCM is typically located under the steering column, accessible from the driver’s side footwell. You may need to remove a lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be pressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount the new BCM in the same location and securely reconnect all the electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect Power: Re-attach the negative battery terminal.
- ✔ Perform Relearn Procedures: Start the vehicle and check for proper function of all accessories. As noted below, certain systems may require a relearn procedure to fully sync with the new BCM.
Important Post-Installation Steps
After installing your new BCM, some vehicle systems may need to be recalibrated. This is a normal part of the process. The most common procedures are:
- Airbag System Sync: If the airbag warning light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
Disclaimer: Always consult a factory service manual or a qualified professional for procedures specific to your vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles. Please verify your part number and model from the list below. This unit is compatible with part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084.
Frequently Asked Questions
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages many of your vehicle’s non-engine related functions. This includes the power windows, locks, interior lighting, security system, wipers, and key fob operation. It’s the command center for passenger comfort and convenience features.
What is the ‘Cloning Service’ and how does it work?
With our cloning service, you send us your original BCM. We then extract the unique, vehicle-specific data (including security info and optional features) and transfer it directly onto the replacement module. This makes the new part a perfect digital copy of the original, eliminating the need for dealership programming. We then ship both your original module and the ready-to-install replacement back to you.
Do I need to take my car to a mechanic for installation?
Because this module comes pre-programmed for your VIN, a DIY-savvy individual can typically perform the physical swap. However, some models may require post-installation relearn procedures (like for the airbag or brake systems) which necessitate a professional bidirectional scan tool.
Will this fix my ‘Service Theft Deterrent System’ message?
In many cases, yes. The BCM is integral to the Passlock/Passkey anti-theft systems on GM vehicles. A failing BCM is a very common cause of this warning message. Our cloning service ensures the security data is correctly transferred, resolving this issue.
What information do you need from me?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. This is essential for us to program the module correctly before we ship it. You will also need to ship your original module to us for the cloning process.